Elevator-operating mechanism.



- Patanted Nov. 25, I902. H. M. CHURCHILL & L. CHRISTIANSEN.

- ELEVATOR OPERATING MECHANISM.

(Application filed Mar. 6. 1902.)

No Model.)

THE Noam: vzrzns 00., FNOTO-LIYNQ, WASHINGTON. n. c.

UNITED STATES PATENT OFFICE.

HARVEY M. CHURCHILL AND LUDWIG OHRISTIANSEN, OF LYNN, MASSA OHUSETTS; SAID CHURCHILL ASSIGNOR TO CHARLES E. SMALL, OF LYNN,

MASSACHUSETTS.

ELEVATOR-OPERATING MECHANISM.

SPECIFICATION forming part of Letters Patent N 0. 714,147, dated November 25, 1902.

Application filed March 6, 1902. Serial No. 96,909. (No model.)

To all whom it may concern.-

Be it known that W6,HARVEY M. CHURCHILL and LUDWIG CHRIsTIANsEN, citizens of the United States, residing at Lynn, in the county of Essex and State of Massachusetts, have invented certain new and useful Improvements in Elevator-Operating Mechanisms; and we do hereby declare the following to be a full, clear, and exact description of the invention,

such as will enable others skilled in the art to which it appertains to make and use the same.

The present invention relates to an improvement in elevators, and more particularly to that class of elevators which are adapted to work through hatchways in floors. In this class of elevators the presence of a hole in the hatch-doors to receive the elevator-operating rope is objectionable, and according to our invention we have produced a construction in which the necessity for such holes is done away with.

The present invention consists in the devices and combinations of devices hereinafter described and claimed.

In the accompanying drawings, illustrating the preferred form of our invention, Figure 1 is an elevation illustrating the present invention in connection with the elevator.

Figs. 2 and 3 illustrate, respectively, the side elevation and plan of a catch device connected with the operating-rope; and Figs. 4

and 5 illustrate, respectively, a plan and section of the detent device which is mounted upon the elevator-car and adapted to cooperate with the catch device to actuate the elevator-operating rope, the plan being shown with the cover removed.

Referring to the accompanying drawings, the elevator-car l is adapted to move through 0 hatchways 2 and 3, provided with the usual hatch-doors, (not shown,) and the elevatoroperating rope 4 is located outside of the hatchway, passing through the floors of the building. The rope-catch device (indicated 5 in a general way by the reference character 5) consists of a catch 6, slidingly mounted upon the rod 7, supported by brackets 8 from the column 9, conveniently consisting of a piece of gas-pipe supported by brackets 10,

secured to the floor and ceiling, respectively. The rope-catch 6 is provided with a hook 11, which engages one side of the column 9. A lateral projection 12 from the side of the catch device 6 is extended in the opposite direction from the projection 11 and cooperates 5 5 with the clip 13 to embrace the rope 4. The clip 13 is provided with a projection 14, which engages the opposite side of the column 9 from that engaged by the projection 11, so that the column 9 constitutes a guide which holds the catch device 6 from turning upon its supporting-rod 7. Stops 15 are secured to the rope 4. upon opposite sides of the projection 12 and clip 13, so that when the catch device 6 is moved it will engage one or the other of the stops 15 and move the rope 4.- in the direction to stop the elevator. The catch device 6 is provided with a notch 16, adapted to receive the detent device secured to the elevator. Upon opposite sides of the notch 16 are arranged inclined guiding-surfaces 17, with which the detent device of the elevator comes first in contact, pushing said detent device back and compressing its spring, so that it may be forced outward again, thereby to engage the notch 16 to move the catch device 6.

The detent device mounted upon the elevator and indicated in a general way by the reference character 18 consists of a springpressed detent 19, mounted in a suitable guideway formed in the frame 20, which is provided with the cover 21. Upon the upper side of the detent 19 is provided a lug 22, which engages one end of the spiral spring 23, the other end of which is engaged by the projection 24, which is extended downward from the cover 21. This arrangement is such that the spring normally presses the detent 19 outward in the direction to engage catch 0 device 5, mounted upon the elevator-operating rope. A lever 25, pivoted at 26 to the cover 21, provided with the cam 27, is employed to withdraw the detent 19 against the pressure of the spring 23, so as to hold said 5 detent in its retracted position and to prevent it from engagement with any of the catch devices 5, secured to the operating-rope. The

detent device 18 is mounted upon a bracket 28, in turn mounted upon a column 29, secured to the elevator-car 1 in any suitable way, as by means of the bracket 30 and rods 31.

The operation of our improved elevator is as follows: Assuming the elevator to be standing at any given floor, with the detent device of the car in engagement with the catch device at that floor, the detent device will first be withdrawn by means of the lever 25, and then the car will be started by pulling upon the operating-rope 4 in the usual way. If then it is desired to stop at the next floor, the detent device will be released by moving the lever 25 to the position indicated in Fig. 5, and then when the elevator arrives at the next floor the detent 19 will engage the lower inclined surface 17 and as it rises against such surface will be pushed rearwardly against the pressure of the spring 23 until it comes opposite the notch 16, when the spring will force the detent into the notch. The continued movement of the elevator will then lift the catch device, and said device will move the elevator-operating rope in the direction to stop the elevator. At the top and bottom floors the ordinary devices for stopping the elevator will be employed, and in order to lock the elevator at such floors and to prevent it being operated from any other floor the elevator-operating rope will be provided with two stops similar to the stops 15 at the other floors, and the operator may pull the rope 4 toward the elevator-car and lay the rope in either of the notches 32, provided in the projections 33, which project from the opposite sides of the frame 20 of the detent device. The stops will lie upon opposite sides of the projections 33, thus preventing any one from starting the elevator from any other floor without first releasing the rope from engagement with the notches 32.

The weight of the catch devices 5, supported by the elevator-operating rope 4 at the several floors of the building, is small, so that a comparatively inconsiderable amount of weight is hung upon said rope, which will conduce to ease and certainty of operation for reasons which are apparent to those skilled in the art. It will further be noted that when the detent 19 is withdrawn and held in its retracted position by the lever 25 there will be no engagement of the parts at each floor as the elevator passes. Heretofore, so far as we are aware of the art, the devices which have been employed for the purposes of this invention have been defective in that they necessarily required the contact of the operating devices at every floor as the elevator passed, whether it was brought to a rest at that floor or not, and it is a considerable advantage well recognized by the elevator constructors to avoid such contact, which involves wear and liability to disarrangement.

We have not illustrated in the drawings the hatch-doors, as the same maybe of any usual or preferred construction and form no part of our invention, besides which our invention is adapted for use in connection with elevators running in wells Where no hatchdoors are employed.

Our invention is not limited to the specific construction herein illustrated and described, but the same may be embodied in any suitable construction without departure therefrom.

Having thus described our invention, we claim as new and desire to secure by Letters Patent of the United States of America- 1. An elevator-operating mechanism, having, in combination, an elevator-car, an elevator-operating rope, a catch device connected to the rope and provided with a notch, a detent device mounted on the elevator-car and provided with a spring-pressed detent adapted to engage said notch and operate the rope, substantially as described.

2. An elevator-operating mechanism, having, in combination, an elevator-car, an ele vator-operating rope, a catch device mounted on suitable guides so as to be movable in the direction of said rope and provided with projections, said rope being provided with stops adapted to engage said projections, and a detent device mounted on the elevator-car and adapted to engage said catch device, substantially as described.

3. An elevator-operating mechanism, having, in combination, an elevator-car, an elevator-operating rope located outside of the hatchway, a catch device slidingly mounted on guides in proximity to the elevator-operating rope, said rope and catch device having cooperating projections whereby when the catch device is moved it will engage the elevator-operating rope to stop the car,- and a detent device mounted on the car and adapted to cooperate with the catch device to move the same, substantially as described.

t. An elevator-operating mechanism, having, in combination, an elevator-car. an elevator-operating rope, a catch device provided with a notch and having inclined surfaces upon opposite sides of said notch, said catch device and elevator-operating rope having cooperating projections whereby the rope may be moved by the catch device, and a detent device having a spring-pressed detent adapted to engage said inclined surfaces and then to spring into said notch to move said catch device and through it the elevator-operating rope to stop the car, substantially as described.

5. An elevator-operating mechanism, having, in combination, an elevator-car, an elevator-operating rope, a catch device connected with said rope and provided with a notch, and a detent device mounted upon the car and adapted to cooperate with said notch, substantially as described.

6. ,An elevator-operating mechanism, hav- IIO ing, in combination, an elevator-car, an ele- In testimony whereof We affix our signavatoroperating rope, a catch device, two tures in presence of two witnesses. guides for said catch device, said catch device and elevator-operating rope being operatively connected together, and a yieldinglyy movable detent mounted upon the elevator- Witnesses: car and adapted to cooperate with the catch HORACE VAN EVEREN,

device, substantially as described. FRED 0. FISH. 

